Police have said since 2010 that Mozzelle Brown joined with his cousin, Chad Schaffer, and Schaffer’s then-girlfriend, Candace Foster, in killing New Hampshire scientist and writer Eugene Mallove in May 2004 in Norwich.

Until this week, Brown has been in federal prison in Elkton, Ohio, serving a 15-year sentence after being convicted of gun and drug violations in 2008.

On Wednesday, however, Norwich police met Brown at a federal prison in Brooklyn, N.Y., arrested him and brought him to Connecticut to answer for what they say is his role in the slaying.

Brown, 39, formerly of Taftville, was arraigned Thursday afternoon in Norwich Superior Court. He appeared in front of Judge Stuart Schimelman. He faces charges of murder, felony murder and first-degree robbery.

Schimelman set Brown’s bail at $2 million and transferred his case to Part A, which handles the most serious crimes. His next court appearance is Dec. 9 in New London Superior Court.

In April 2012, Schaffer accepted a plea deal in the middle of his murder trial. Schaffer was sentenced to 16 years in prison, bringing bitter complaints from members of Mallove’s family, who called the sentence “a joke.”

Foster, a key witness against Schaffer and likely to be one against Brown, is in prison held on $2.5 million bail awaiting Brown’s case to be disposed of before hers is settled.

The MIT-educated Mallove was killed on May 14, 2004, at his childhood home on Salem Turnpike in Norwich. He had driven there that morning from New Hampshire in order to clean up a mess left behind by tenants he had evicted in April because they failed to pay the rent, police said.

Among the people evicted were Schaffer and Foster, police said. They heard that Mallove was throwing away some of their property left behind there, police said, and Schaffer went to retrieve it.

During their encounter outside Mallove’s home, police said, Schaffer badly beat Mallove. He returned to his and Foster’s home on Chestnut Street in Norwich, his clothes covered with blood, police said, and told her that he had beaten Mallove and needed her help to make it look like a robbery.

Schaffer, Foster and Brown then drove to Mallove’s home, police said. They found him lying face down in the driveway, bloody but still alive, police said.

According to Foster’s account to police, Schaffer and Brown then punched and kicked Mallove as well as hit him with a pipe Brown retrieved from the garage. Then, police said, Schaffer put something, possibly a bag, over Mallove’s head until he stopped breathing.

Page 2 of 2 - The trio then stole several items, including Mallove’s wallet and his minivan, to make the crime look like a robbery, police said.

Schaffer eventually admitted to police that he took part in the beating, but said he had only a minor role. He said an argument started between Brown and Mallove, and Brown beat him to death, police said.